Car doesn't move, Code P1780
#1
2nd gear
Thread Starter
Car doesn't move, Code P1780
Howdy y'all, I have a 2001 gs430. It has a p1780 code for pnp switch. I've driven it 3 times in the last 3 months due to it behind kinda clapped and blowing out the radiator.The first time, it needed a lil extra gas to get moving. Last times I drove I had to bounce off limiter to get it moving, and now it doesn't move. The PRND32L all light up when going through all of them on the cluster. All I've done is add ATF cuz dude said it was almost empty, and just ordered a new switch. Engine is good, no other code other than that. Could this really keep it from moving at all? Or is the trans toast?
#2
"Ordered a new switch"? Which one Please. The code seems to point to a switch in the transmission.
Now I don't want to disparage anyone. But I use the owners manual and check the fluid levels myself. Step one. I'm assuming that the car ran fine when the ATF was almost gone. Added ATF and problems start. Hmmm.
Paul
Now I don't want to disparage anyone. But I use the owners manual and check the fluid levels myself. Step one. I'm assuming that the car ran fine when the ATF was almost gone. Added ATF and problems start. Hmmm.
Paul
#3
2nd gear
Thread Starter
"Ordered a new switch"? Which one Please. The code seems to point to a switch in the transmission.
Now I don't want to disparage anyone. But I use the owners manual and check the fluid levels myself. Step one. I'm assuming that the car ran fine when the ATF was almost gone. Added ATF and problems start. Hmmm.
Paul
Now I don't want to disparage anyone. But I use the owners manual and check the fluid levels myself. Step one. I'm assuming that the car ran fine when the ATF was almost gone. Added ATF and problems start. Hmmm.
Paul
#4
"Should I drain some out"?
That I cannot tell you. But here is the procedure for checking ATF Fluid level. You'll be better served by checking yourself just to know for certain if the transmission is over filled.
Paul
That I cannot tell you. But here is the procedure for checking ATF Fluid level. You'll be better served by checking yourself just to know for certain if the transmission is over filled.
Paul
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QLex300 (12-29-22)
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